US2926992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovery of uranium values
Assignee: Imperial Chemical Industries Ltd
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Filing: 1955-01-27
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Granted: 1960-03-01
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Expires: 1975-01-27
Abstract
No abstract record available.
Inventors
- 👤 Stedman Ronald Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:08
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0226; C01; C01G; C01G43/00; C01G43/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR THE RECOVERY OF URANIUM VALUES FROM ROCK PHOSPHATE WHICH COMPRISES THE STEPS OF OPENING TIP ROCK PHOSPHATE WITH A REACTANT CONSISTING ESSENTIALLY OF A MINERAL ACID, NEUTRALISING THE RESULTING REACTION MIXTURE TO A PH VALUE IN THE RANGE OF 3.5 TO 5.0, SEPARATING UNDISSOLVED MATERIALS, AND PRECIPITATING FROM THE LIQUID OBTAINED THEREFROM, A PHOS-PHATE-CONTAINING URANIUM SALT IN THE PRESENCE OF AN ADDED INORGANIC FILTER SAID USING AS PRECIPITANT A REDUCING AGENT, SEPARATING THE SOLID MIXTURE FROM THE LIQUID, TREATING WITH A MINERAL ACID THE SEPARATED SOLID TO DISSOLVE THE PRECIPITATED URANIUM SALT FROM THE ADDED FILTER SID, SEPARATING THE SOLUTION THUS PRODUCED AND ADJUSTING ITS PH TO A VALUE OF A LESS ABOUT 1.0 WHEREBY A PRECIPITATE CONTAINING URANIUM IS OBTAINED.
Claim 2
Dependent Claim
124 words
A PROCESS FOR THE RECOVERY OF URANIUM VALUES FROM ROCK PHOSPHATE WHICH COMPRISES THE STEPS OF OPENING TIP ROCK PHOSPHATE WITH A REACTANT CONSISTING ESSENTIALLY OF A MINERAL ACID, NEUTRALISING THE RESULTING REACTION MIXTURE TO A PH VALUE IN THE RANGE OF 3.5 TO 5.0, SEPARATING UNDISSOLVED MATERIALS, AND PRECIPITATING FROM THE LIQUID OBTAINED THEREFROM, A PHOS-PHATE-CONTAINING URANIUM SALT IN THE PRESENCE OF AN ADDED INORGANIC FILTER SAID USING AS PRECIPITANT A REDUCING AGENT, SEPARATING THE SOLID MIXTURE FROM THE LIQUID, TREATING WITH A MINERAL ACID THE SEPARATED SOLID TO DISSOLVE THE PRECIPITATED URANIUM SALT FROM THE ADDED FILTER SID, SEPARATING THE SOLUTION THUS PRODUCED AND ADJUSTING ITS PH TO A VALUE OF A LESS ABOUT 1.0 WHEREBY A PRECIPITATE CONTAINING URANIUM IS OBTAINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |